How to Protect Personal Data and Work Accounts When Using Public Wi-Fi with a Proxy

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You are working in a cafe, airport, or coworking space — and connecting to free Wi-Fi. At this moment, your advertising accounts, passwords, and work data become vulnerable to interception. Arbitrage specialists, SMM professionals, and marketplace sellers lose accounts not only due to poor proxies but also because of insecure internet connections. In this article, we will discuss how to properly use proxies to protect data on public networks — without complex technical knowledge.

Why Public Wi-Fi is Dangerous for Work Accounts

Public Wi-Fi is a network that is simultaneously connected to dozens of unfamiliar people. Unlike a home router, such a network does not encrypt traffic between your device and the access point. This means that anyone in the same network with the right software can see what you are transmitting over the internet.

For an average user, this is unpleasant but bearable. For an arbitrage specialist managing Facebook Ads or TikTok Ads accounts, it is a disaster. Imagine: you are sitting in a cafe, logging into Business Manager, and someone in the same network intercepts your session cookies. Within minutes, the attacker is logged into your account with your permissions — and that's it, the advertising account with the budget is lost.

A similar situation occurs with SMM professionals who manage 20–50 client accounts on Instagram or TikTok. Losing even one account due to data interception is a reputational and financial blow. For sellers on Wildberries and Ozon, who monitor competitor prices through parsers, session interception can wipe out weeks of work.

⚠️ The Main Threat of Public Wi-Fi

A Man-in-the-Middle (MITM) attack — an attacker positions themselves between you and the access point and intercepts all traffic. To carry it out, all you need is a laptop and free software. No hacking skills are required.

Another common threat is fake access points. An attacker creates Wi-Fi with names like “Starbucks_Free” or “Airport_WiFi” — and you connect to it, thinking it is the official network of the establishment. All your traffic goes through the fraudster's device. This is called an Evil Twin attack, and it occurs in airports, shopping malls, and popular cafes much more frequently than one might think.

What Exactly is Stolen Through Open Networks

Before discussing protection, it is important to understand what exactly is at risk. This will help assess the real risks for your specific work scenario.

What is Stolen	Who is Critically Affected	Consequences
Session Cookies	Arbitrage specialists, SMM	Account hijacking on Facebook, Instagram, TikTok
Logins and Passwords	Everyone	Loss of access to advertising accounts and services
Payment Card Data	Everyone	Financial losses
API Keys and Tokens	Marketers, Developers	Service compromise, client data leaks
Real IP Address	Arbitrage specialists, multi-accounting	Account linking, mass bans
Request History	Marketplace sellers	Disclosure of competitor monitoring strategies

It is important to highlight the risk of revealing your real IP address. If you are engaged in multi-accounting — managing several advertising accounts or Instagram profiles — and all of them at some point connect from the same public network IP, the platforms will instantly link them together. The result is a chain ban of all accounts at once.

How Proxies Protect Data on Public Networks

A proxy server acts as an intermediary between your device and the internet. When you connect through a proxy, all your traffic first goes to the proxy server, and from there — to the target websites. This provides several important advantages when working from public networks.

Masking the Real IP. The websites you visit see the IP address of the proxy server, not your real address from the public network. This is critical for arbitrage specialists: even if an attacker in the same network intercepts part of the traffic, they will not see your actual IP, meaning they cannot link your activity to a specific device.

Encryption via SOCKS5. The SOCKS5 protocol supports authentication and provides an additional layer of protection for transmitted data. When using SOCKS5 proxies, intercepting readable traffic becomes significantly more difficult — an attacker in a public network will receive an encrypted data stream.

Account Isolation. When working through anti-detect browsers (Dolphin Anty, AdsPower, GoLogin, Multilogin), each profile operates through a separate proxy. Even if you are connected to public Wi-Fi, each account has its unique IP. Platforms cannot link accounts together, and the risk of chain bans disappears.

For maximum protection when working from public networks, it is recommended to combine proxies with HTTPS connections. Most modern websites already use HTTPS, which adds another layer of encryption on top of the proxy connection. If the proxy operates via SOCKS5 and the site uses HTTPS — intercepting your data in a public network becomes virtually impossible without specialized equipment.

Which Type of Proxy to Choose: Comparison for Different Tasks

Not all proxies are equally suitable for protection when working from public networks. The choice depends on your tasks: arbitrage, SMM, marketplace monitoring, or simply secure browsing.

Proxy Type	For Whom	Level of Protection	Speed
Residential Proxies	Arbitrage specialists, SMM	High	Average
Mobile Proxies	Arbitrage specialists (Facebook, TikTok)	Maximum	Average
Data Center Proxies	Parsing, price monitoring	Medium	High

Residential Proxies use IP addresses of real home users. When you work through a residential proxy from a cafe, websites see the IP of an ordinary person from a specific city — for example, from Moscow or Berlin. This makes your traffic virtually indistinguishable from that of a regular user. For working with Facebook Ads, Instagram, and other social platforms — this is the optimal choice.

Mobile Proxies operate through IP addresses of mobile operators (4G/5G). This is the most "trusted" type of IP from the perspective of platforms like Facebook and TikTok: they know that one mobile IP can be used by hundreds of users simultaneously (through the operator's NAT), so they do not ban such addresses as aggressively. If you are working with advertising accounts from public places — mobile proxies provide maximum protection against bans.

Data Center Proxies are fast and cheap server IPs. They also work for protecting data on public networks: your real IP is hidden, and traffic goes through the server. However, they are less reliable for working with social platforms — Facebook and Instagram can easily identify server IPs and may request additional verification. However, for parsing Wildberries, Ozon, Avito, or Yandex.Market — they are an excellent option.

Setting Up Proxies in Anti-Detect Browsers: Step by Step

If you are an arbitrage specialist or SMM professional, you are likely already using an anti-detect browser — Dolphin Anty, AdsPower, GoLogin, or Multilogin. Setting up proxies in them takes literally 2–3 minutes. We will demonstrate using Dolphin Anty — the most popular tool in the Russian-speaking arbitrage community.

Dolphin Anty: Adding a Proxy to a Profile

1. Open Dolphin Anty and go to the “Proxies” section in the left menu.
2. Click the “Add Proxy” button in the upper right corner.
3. Select the protocol type: SOCKS5 (recommended for maximum protection) or HTTP/HTTPS.
4. Fill in the fields: host (proxy IP address), port, username, and password — this data is provided by your proxy provider.
5. Click “Check Proxy” — the system will show your new IP and country.
6. Save the proxy and link it to the desired browser profile.

After this, every time you open this profile from anywhere — home, a cafe, or an airport — it will automatically use the proxy. Your real IP from the public network remains hidden.

AdsPower: Setting Up Proxy in a Profile

1. In the main menu of AdsPower, click “New Profile” or open the settings of an existing one.
2. Go to the “Proxies” tab.
3. Select the type from the dropdown menu: Socks5.
4. Enter the proxy data: IP, port, username, and password.
5. Click “Check Network” — make sure the IP has changed.
6. Save the profile and launch the browser.

GoLogin: Quick Proxy Addition

1. Open GoLogin and select a profile, click “Edit”.
2. In the “Connection” block, select the proxy type from the list (SOCKS5, HTTP).
3. Paste the proxy data in the format ip:port:login:password.
4. Click “Check Proxy” and ensure that the geolocation matches the expected one.
5. Save and launch the profile.

Setting Up Proxies in Regular Browsers Without Software

If you are not using an anti-detect browser, you can set up proxies directly in the browser or in the system settings. This will take 5 minutes and provide basic protection when working from public networks.

Google Chrome: Using the FoxyProxy Extension

1. Install the FoxyProxy Standard extension from the Chrome Web Store.
2. Click on the FoxyProxy icon in the browser toolbar → “Options”.
3. Click “Add” to add a new proxy.
4. Fill in: type (SOCKS5), host (proxy IP), port.
5. If the proxy requires authentication — enter the username and password.
6. Save and select the mode “Use proxy for all URLs”.

Firefox: Built-in Proxy Settings

1. Open Firefox Settings → scroll down to the “Network” section.
2. Click “Connection Settings”.
3. Select “Manual proxy configuration”.
4. In the “SOCKS Host” field, enter the proxy IP, and in the “Port” field — the port.
5. Select SOCKS v5 and check the box “Use DNS over SOCKS5” — this is important; otherwise, DNS requests will bypass the proxy.
6. Click OK and check the IP on whatismyip.com.

Windows: System Proxy Settings

1. Open Settings → Network & Internet → Proxy.
2. In the “Manual proxy setup” section, toggle the switch to “On”.
3. Enter the proxy server address and port.
4. Click “Save”.

Note: System proxy settings in Windows apply only to HTTP/HTTPS traffic, and not all applications take them into account. For working with advertising accounts and anti-detect browsers, it is more reliable to set up proxies directly in the tool itself.

Security Checklist When Working from Public Wi-Fi

Proxies are an important but not the only element of protection. Here is a complete checklist for those who regularly work from cafes, coworking spaces, airports, and other public places.

Pay special attention to the point about DNS leaks. This is a common mistake: a user sets up a proxy, but DNS requests (that is, requests to resolve website addresses) still go through the public network provider. An attacker in the same network can see which websites you visit, even without seeing the content of your requests. The solution is to use SOCKS5 with the DNS proxying option (in Firefox, this is the checkbox “Use DNS over SOCKS5”) or choose proxy providers that offer secure DNS servers.

Another important point for arbitrage specialists is not to switch between proxies during a work session. If you opened a Facebook Ads account through one IP and then reconnected through another — the system may interpret this as suspicious activity and request verification or block the account. Always end the session, change the proxy, and only then reopen the account.

Conclusion

Public Wi-Fi is a convenience that comes at the cost of security. For arbitrage specialists, SMM professionals, and marketplace sellers, the risks are particularly high: losing an advertising account, hijacking client accounts, or disclosing work data can cost significantly more than it seems at first glance.

Proxies solve several problems simultaneously: they hide your real IP from platforms and attackers in the network, isolate accounts from each other, and protect against chain bans during multi-accounting. Setting up takes 5–10 minutes in any anti-detect browser — Dolphin Anty, AdsPower, GoLogin, or Multilogin — and works automatically with each subsequent connection.

If you work with Facebook Ads, Instagram, or TikTok from public places, we recommend paying attention to mobile proxies — they have IPs from mobile operators, which platforms trust significantly more than server or even residential addresses. For price monitoring on Wildberries, Ozon, or data parsing from public places, data center proxies are an excellent option — fast, stable, and reliably hiding your real IP.